Propagation and stability of flames in inhomogeneous mixtures

TL;DR

This paper studies how thermal expansion and gravity influence the propagation and stability of laminar flames in inhomogeneous mixtures within a simplified channel setup.

Contribution

It provides new insights into the effects of inhomogeneities, thermal expansion, and gravity on flame behavior in a controlled, idealized environment.

Findings

Thermal expansion significantly affects flame stability.

Gravity influences flame propagation speed.

Inhomogeneities alter flame structure and stability.

Abstract

We investigate the effect of thermal expansion and gravity on the propagation and stability of flames in inhomogeneous mixtures. We focus on laminar flames in the simple configuration of an infinitely long channel with rigid porous walls in order to understand the effect of inhomogeneities on these fundamental structures.